图片处理工具类梳理

缺乏、安全感 2021-11-04 19:22 339阅读 0赞

###### 引入jar包 ######

<dependency>
        <groupId>net.coobird</groupId>
        <artifactId>thumbnailator</artifactId>
        <version>0.4.8</version>
    </dependency>

###### 工具类 ######

import net.coobird.thumbnailator.Thumbnails;
    import net.coobird.thumbnailator.geometry.Position;
    import net.coobird.thumbnailator.geometry.Positions;
    
    import javax.imageio.ImageIO;
    import java.io.*;
    
    /**
     * Module:
     * Description:图片处理工具类
     * Author: zyp
     * Date: 2019/8/5
     **/
    public class ImgUtil {
    
        /**
         * 压缩图片
         * @param srcImagePath 源图片路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB.png
         * @param desImagePath 目标图片完整路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB_PRESS.png
         * @param scale 压缩率（缩放比例，为“1”则是原图大小） 范围：0.0~1.0
         * @param outputQuality 输出的图片质量，范围：0.0~1.0，1为最高质量
         * @param suffix 文件后缀 png
         */
        public static void compressImage(String srcImagePath, String desImagePath, double scale,float outputQuality,String suffix) {
            try {
                OutputStream out = new FileOutputStream(desImagePath);
                Thumbnails.of(srcImagePath).scale(scale).outputQuality(outputQuality).outputFormat(suffix).toOutputStream(out);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        /**
         * 图片旋转
         * @param srcImagePath 源图片路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB.png
         * @param desImagePath 目标图片完整路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB_PRESS.png
         * @param rotate 角度,正数：顺时针 负数：逆时针
         * @param x 旋转前横长度
         * @param y 旋转前高长度
         */
        public static void rotateImage(String srcImagePath, String desImagePath, double rotate,int x,int y) {
            try {
                OutputStream out = new FileOutputStream(desImagePath);
                Thumbnails.of(srcImagePath).size(x,y).rotate(rotate).toOutputStream(out);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        /**
         * 图片增加水印
         * @param srcImagePath 源图片路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB.png
         * @param desImagePath 目标图片完整路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB_PRESS.png
         * @param waterMarkImgPath 水印图片路径 C:\Users\gzpost05\Pictures\Saved Pictures\waterMarkImg.png
         * @param x 横长度
         * @param y 高长度
         * @param position 水印位置，可选Positions.[BOTTOM_RIGHT、BOTTOM_CENTER、BOTTOM_LEFT、CENTER_RIGHT、CENTER、CENTER_LEFT、TOP_RIGHT、TOP_CENTER、TOP_LEFT]
         * @param openness 透明度 0.5f
         * @param outputQuality 输出的图片质量，范围：0.0~1.0，1为最高质量
         */
        private static void waterMarkImage(String srcImagePath, String desImagePath,String waterMarkImgPath,int x,int y,Position position,float openness,float outputQuality) {
            try {
                OutputStream out = new FileOutputStream(desImagePath);
                Thumbnails.of(srcImagePath).size(x, y).watermark(position, ImageIO.read(new File(waterMarkImgPath)), openness).outputQuality(outputQuality).toOutputStream(out);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        /**
         * 指定区域裁剪
         * @param srcImagePath 源图片路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB.png
         * @param desImagePath 目标图片完整路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB_PRESS.png
         * @param x 长度
         * @param y 高度
         * @param position 裁剪区域位置，可选Positions.[BOTTOM_RIGHT、BOTTOM_CENTER、BOTTOM_LEFT、CENTER_RIGHT、CENTER、CENTER_LEFT、TOP_RIGHT、TOP_CENTER、TOP_LEFT]
         * @param isScale 是否按比例缩放
         */
        private static void regionCropImage(String srcImagePath, String desImagePath, int x, int y, Position position,boolean isScale) {
            try {
                OutputStream out = new FileOutputStream(desImagePath);
                Thumbnails.of(srcImagePath).sourceRegion(position, x, y).size(x, y).keepAspectRatio(isScale).toOutputStream(out);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        /**
         * 指定坐标裁剪，图片左上角为原点开始计算
         * @param srcImagePath 源图片路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB.png
         * @param desImagePath 目标图片完整路径 C:\Users\gzpost05\Pictures\Saved Pictures\1DBD4AA986094C4AB3EBF85C7A9647AB_PRESS.png
         * @param x1 坐标1横轴位置
         * @param y1 坐标1纵轴位置
         * @param x2 坐标2横轴位置
         * @param y2 坐标2纵轴位置
         * @param isScale 是否按比例缩放
         */
        private static void coordinateCropImage(String srcImagePath, String desImagePath,int x1,int y1,int x2,int y2,boolean isScale) {
            try {
                if(x2<x1 || y2<y1){
                    System.out.println("输入坐标有误，请重新输入！");
                }
                OutputStream out = new FileOutputStream(desImagePath);
                Thumbnails.of(srcImagePath).sourceRegion(x1, y1, x2, y2).size(x2-x1, y2-y1).keepAspectRatio(isScale).toOutputStream(out);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        public static void main(String[] args) {
            String srcImagePath = "C:\\Users\\gzpost05\\Pictures\\Saved Pictures\\1DBD4AA986094C4AB3EBF85C7A9647AB.png";
            String desImagePath = "C:\\Users\\gzpost05\\Pictures\\asw.png";
            String waterMarkImgPth = "C:\\Users\\gzpost05\\Pictures\\Saved Pictures\\20190807105738.png";
            //指定坐标裁剪
            ImgUtil.coordinateCropImage(srcImagePath,desImagePath,0,0,800,600,false);
            //指定区域裁剪
            ImgUtil.regionCropImage(srcImagePath,desImagePath,300,400,Positions.CENTER,false);
            //图片增加水印
            ImgUtil.waterMarkImage(srcImagePath,desImagePath,waterMarkImgPth,600,400,Positions.CENTER,0.5f,1);
            //图片旋转
            ImgUtil.rotateImage(srcImagePath,desImagePath,90,600,300);
            // 压缩图片
            ImgUtil.compressImage(srcImagePath,desImagePath,0.5f,0.2f,"png");
        }
    
    }